Ultrasonic inspection of a structure with a ramp
a technology of ultrasonic inspection and structure, applied in the field of ultrasonic inspection of structures with ramps, can solve the problems that structural designs with non-parallel surfaces or high surface roughness may be undesirably difficult to inspect with traditional ultrasonic inspection techniques
Active Publication Date: 2020-02-25
THE BOEING CO
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- Description
- Claims
- Application Information
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Benefits of technology
The present patent provides a method for inspecting structures using ultrasound waves. The method involves sending a signal into a structure at an angle parallel to a ramp of the structure and receiving the reflected signal on the other surface of the structure. The received signal is analyzed to detect any inconsistencies or porosity within the structure. The technical effects of this method include improved accuracy and efficiency in inspecting structures and the ability to detect even small defects.
Problems solved by technology
Structural designs having non-parallel surfaces or high surface roughness may be undesirably difficult to inspect with traditional ultrasonic inspection techniques.
Method used
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The illustrative embodiments recognize and take into account one or more different considerations. For example, the illustrative embodiments recognize and take into account that inspecting porosity in composite structures that are steeply angled / ramped, for example having greater than thirty degrees, is undesirably difficult. The illustrative embodiments recognize and take into account that currently, ply ramp areas that change at a rate less than 20:1 are inspected. Ply ramp areas that change at a rate less than 20:1 change at a rate less than three degrees. The illustrative embodiments recognize and take into account that structures with steeper ramps may be desirable.
The illustrative embodiments recognize and take into account that inspection requirements may need to be modified when a ramp in the structure has an angle greater than three degrees. The illustrative embodiments recognize and take into account that modifying inspection requirements may impact design of the structure...
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Abstract
A signal is sent into a structure at an angle substantially parallel to a ramp of the structure using a transducer array positioned at a first surface of the structure. An ultrasound response signal is formed at a second surface of the structure. The ultrasound response signal is received at the transducer array.
Description
BACKGROUND INFORMATION1. FieldThe present disclosure relates generally to inspecting structures, and more specifically, to structures with ramps. Yet more specifically, the present disclosure presents methods for ultrasonic inspection of portions of a structure beneath a ramp of the structure.2. BackgroundUltrasound is a non-destructive inspection method used in the inspection of structures, including composite structures. Ultrasonic inspections send ultrasonic signals into a structure and analyze ultrasonic ultrasound response signals to inspect the structure.Ultrasonic inspection is sensitive to structural geometry. To inspect a structure using ultrasound, it is desirable for the front surface and back surface of the structure to be parallel to each other. For ultrasonic inspection it is desirable for the front surface and the back surface to be substantially smooth.Structural designs having non-parallel surfaces or high surface roughness may be undesirably difficult to inspect wi...
Claims
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IPC IPC(8): G01N15/08G01N29/11G01N29/04
CPCG01N15/088G01N29/11G01N29/043G01N2291/015G01N2291/056G01N2291/0231G01N2291/106G01N2291/044G01N2291/048G01N2291/0289
Inventor TAT, HONG HUEFETZER, BARRY ALLENGEORGESON, GARY E.TAPIA, WILLIAM JOSEPHFREET, MARTIN L.PUCKETT, EDWARD L.
Owner THE BOEING CO